I was using a 12VDC power supply to power my arduino UNO. Suddenly everything stopped, and since the voltage regulators were kinda hot i removed power. After a day I connected it via USB to my computer, with [u]nothing[/u] connected. All that happened was the green 'ON' led turning on. Could I have fried my Arduino?
Was using 3 74HC595 shift registers to power 20 LEDs. Everything had been working fine the day before for at least an hour straight. Today, though, it 'crashed' after about a minute.
When i connect Arduino to my PC, it doesn't recognise it (no tudu sound (windows) and I can't upload a sketch or open the serial monitor either).